Biodiversity and Species Change in the Arctic Ocean: A View Through the Lens of Nares Strait
Nares Strait is the northern most outflow gateway of the Arctic Ocean, with a direct connection to the remaining multi-year ice covered central Arctic Ocean. Nares Strait itself flows into the historically highly productive North Water Polynya (Pikialasorsuaq). Satellite data show that Nares Strait...
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ftdoajarticles:oai:doaj.org/article:4da06defeb5c4dbc8a915459f2d73676 2023-05-15T14:51:14+02:00 Biodiversity and Species Change in the Arctic Ocean: A View Through the Lens of Nares Strait Dimitri Kalenitchenko Nathalie Joli Marianne Potvin Jean-Éric Tremblay Connie Lovejoy 2019-08-01T00:00:00Z https://doi.org/10.3389/fmars.2019.00479 https://doaj.org/article/4da06defeb5c4dbc8a915459f2d73676 EN eng Frontiers Media S.A. https://www.frontiersin.org/article/10.3389/fmars.2019.00479/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2019.00479 https://doaj.org/article/4da06defeb5c4dbc8a915459f2d73676 Frontiers in Marine Science, Vol 6 (2019) marine microbial eukaryotes pan-Arctic biome Phaeocystis North Water Polynya diatoms (Bacillariophyta) ice loss Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2019 ftdoajarticles https://doi.org/10.3389/fmars.2019.00479 2022-12-31T01:00:09Z Nares Strait is the northern most outflow gateway of the Arctic Ocean, with a direct connection to the remaining multi-year ice covered central Arctic Ocean. Nares Strait itself flows into the historically highly productive North Water Polynya (Pikialasorsuaq). Satellite data show that Nares Strait ice is retreating earlier in the season. The early season surface chlorophyll signal, which was a characteristic of the North Water, has also moved north into Nares Strait. However, given the vast differences in the hydrography and physical oceanographic structure of the North Water and Nares Strait there is no a priori reason to assume that the species assemblages and overall productivity of this region between Greenland and Canada will be maintained in the face of ongoing sea ice decline. The North Water’s high marine mammal and bird populations are dependent on seasonally persistent diatom dominated phytoplankton productivity, and although there have been several studies on North Water phytoplankton, virtually nothing is known about the communities in Nares Strait. Here we investigated the microbial eukaryotes, including phytoplankton in Nares Strait using high-throughput amplicon sequencing. Samples were collected from Kennedy Channel below the northern ice edge of Nares Strait through the Kane Basin and into the northern limit of the North Water. The physical oceanographic structure and initial community rapidly changed between the faster flowing Kennedy Channel and the comparatively wider shallower Kane Basin. The community changes were evident in both the upper euphotic zone and the deeper aphotic zone. Heterotrophic taxa were found in the deeper waters along with ice algae that would have originated further to the north following release from the ice. Although there was a high proportion of pan-Arctic species throughout, the Nares Strait system showed little in common with the Northern North Water station, suggesting a lack of connectivity. We surmise that a direct displacement of the rich North Water ... Article in Journal/Newspaper Arctic Arctic Ocean Central Arctic Greenland ice algae Kane Basin Kennedy channel Nares strait Phytoplankton Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Canada Greenland Nares ENVELOPE(158.167,158.167,-81.450,-81.450) Kane ENVELOPE(-63.038,-63.038,-73.952,-73.952) Kennedy Channel ENVELOPE(-66.139,-66.139,80.919,80.919) Frontiers in Marine Science 6 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
marine microbial eukaryotes pan-Arctic biome Phaeocystis North Water Polynya diatoms (Bacillariophyta) ice loss Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
marine microbial eukaryotes pan-Arctic biome Phaeocystis North Water Polynya diatoms (Bacillariophyta) ice loss Science Q General. Including nature conservation geographical distribution QH1-199.5 Dimitri Kalenitchenko Nathalie Joli Marianne Potvin Jean-Éric Tremblay Connie Lovejoy Biodiversity and Species Change in the Arctic Ocean: A View Through the Lens of Nares Strait |
topic_facet |
marine microbial eukaryotes pan-Arctic biome Phaeocystis North Water Polynya diatoms (Bacillariophyta) ice loss Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
Nares Strait is the northern most outflow gateway of the Arctic Ocean, with a direct connection to the remaining multi-year ice covered central Arctic Ocean. Nares Strait itself flows into the historically highly productive North Water Polynya (Pikialasorsuaq). Satellite data show that Nares Strait ice is retreating earlier in the season. The early season surface chlorophyll signal, which was a characteristic of the North Water, has also moved north into Nares Strait. However, given the vast differences in the hydrography and physical oceanographic structure of the North Water and Nares Strait there is no a priori reason to assume that the species assemblages and overall productivity of this region between Greenland and Canada will be maintained in the face of ongoing sea ice decline. The North Water’s high marine mammal and bird populations are dependent on seasonally persistent diatom dominated phytoplankton productivity, and although there have been several studies on North Water phytoplankton, virtually nothing is known about the communities in Nares Strait. Here we investigated the microbial eukaryotes, including phytoplankton in Nares Strait using high-throughput amplicon sequencing. Samples were collected from Kennedy Channel below the northern ice edge of Nares Strait through the Kane Basin and into the northern limit of the North Water. The physical oceanographic structure and initial community rapidly changed between the faster flowing Kennedy Channel and the comparatively wider shallower Kane Basin. The community changes were evident in both the upper euphotic zone and the deeper aphotic zone. Heterotrophic taxa were found in the deeper waters along with ice algae that would have originated further to the north following release from the ice. Although there was a high proportion of pan-Arctic species throughout, the Nares Strait system showed little in common with the Northern North Water station, suggesting a lack of connectivity. We surmise that a direct displacement of the rich North Water ... |
format |
Article in Journal/Newspaper |
author |
Dimitri Kalenitchenko Nathalie Joli Marianne Potvin Jean-Éric Tremblay Connie Lovejoy |
author_facet |
Dimitri Kalenitchenko Nathalie Joli Marianne Potvin Jean-Éric Tremblay Connie Lovejoy |
author_sort |
Dimitri Kalenitchenko |
title |
Biodiversity and Species Change in the Arctic Ocean: A View Through the Lens of Nares Strait |
title_short |
Biodiversity and Species Change in the Arctic Ocean: A View Through the Lens of Nares Strait |
title_full |
Biodiversity and Species Change in the Arctic Ocean: A View Through the Lens of Nares Strait |
title_fullStr |
Biodiversity and Species Change in the Arctic Ocean: A View Through the Lens of Nares Strait |
title_full_unstemmed |
Biodiversity and Species Change in the Arctic Ocean: A View Through the Lens of Nares Strait |
title_sort |
biodiversity and species change in the arctic ocean: a view through the lens of nares strait |
publisher |
Frontiers Media S.A. |
publishDate |
2019 |
url |
https://doi.org/10.3389/fmars.2019.00479 https://doaj.org/article/4da06defeb5c4dbc8a915459f2d73676 |
long_lat |
ENVELOPE(158.167,158.167,-81.450,-81.450) ENVELOPE(-63.038,-63.038,-73.952,-73.952) ENVELOPE(-66.139,-66.139,80.919,80.919) |
geographic |
Arctic Arctic Ocean Canada Greenland Nares Kane Kennedy Channel |
geographic_facet |
Arctic Arctic Ocean Canada Greenland Nares Kane Kennedy Channel |
genre |
Arctic Arctic Ocean Central Arctic Greenland ice algae Kane Basin Kennedy channel Nares strait Phytoplankton Sea ice |
genre_facet |
Arctic Arctic Ocean Central Arctic Greenland ice algae Kane Basin Kennedy channel Nares strait Phytoplankton Sea ice |
op_source |
Frontiers in Marine Science, Vol 6 (2019) |
op_relation |
https://www.frontiersin.org/article/10.3389/fmars.2019.00479/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2019.00479 https://doaj.org/article/4da06defeb5c4dbc8a915459f2d73676 |
op_doi |
https://doi.org/10.3389/fmars.2019.00479 |
container_title |
Frontiers in Marine Science |
container_volume |
6 |
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1766322279350796288 |